Clash Royale CLAN TAG#URR8PPP

Animate visibility of a view from gone to visible with animation

I have a view that is invisible by default(Just for the first time).

invisible

Now I need to switch the visibility to VISIBLE with this animation:

VISIBLE

animation

if (myView.getVisibility() == View.INVISIBLE)
myView.setVisibility(View.VISIBLE);
myView.animate().translationY(0);



(Like the SnackBar default animation)

But this isn't working. It will turn visible with default animation

Is there any simple way that I could achieve this?

Note

I'm animating my view to dismiss, like this:

myView.animate().translationY(myView.getHeight());


3 Answers
3

You can do this using XML animation.

XML

Create a slide-up animation XML using set and alpha and put this XML into your resource anim folder.

slide-up

XML

set

alpha

XML

anim

slide_up.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

<translate
android:duration="500"
android:fromYDelta="100%"
android:toYDelta="0" />
</set>


USE:

Use AnimationUtils.loadAnimation() to load animation from XML and set and start animation using .startAnimation() method.

AnimationUtils.loadAnimation()

XML

.startAnimation()

Here is an example:

ImageView imageView = (ImageView) findViewById(R.id.imageView);

// slide-up animation
Animation slideUp = AnimationUtils.loadAnimation(this, R.anim.slide_up);

if (imageView.getVisibility() == View.INVISIBLE)
imageView.setVisibility(View.VISIBLE);
imageView.startAnimation(slideUp);



Hope this will help~

Add animations using ConstraintLayout

Just add below code above the views whose visibility is updated:

TransitionManager.beginDelayedTransition(constraintLayout)


Note:

For more see this post https://robinhood.engineering/beautiful-animations-using-android-constraintlayout-eee5b72ecae3

Based on this answer:

with this methods, I can set the visibility of my view to VISIBLE with a slideUp animation(Like snackbar animation):

int getScreenHeight()
DisplayMetrics displaymetrics = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
return displaymetrics.heightPixels;


public void animateOnScreen(View view)
final int screenHeight = getScreenHeight();
ObjectAnimator animator = ObjectAnimator.ofFloat(view, "y", screenHeight, (screenHeight * 0.8F));
animator.setInterpolator(new DecelerateInterpolator());
animator.start();



Then I can use it like this:

if (myView.getVisibility() == View.INVISIBLE)
myView.setVisibility(View.VISIBLE);
animateOnScreen(myView);



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